Yuav ua li cas rau configure lub firewall nrog koj tus kheej txhais tes?

Kev ruaj ntseg hauv Internet ... Lub ntsiab lus no tau sib tham los ntawm kev sib txawv ntawm "qib siab" ntau tshaj plaws rau ib xyoos twg, tsis nco qab tias nws yuav zoo siv qee qhov kev pom zoo, thiab tsis txhob qhia ib pawg ntawm txaus ntshai, tiam sis tsis ntseeg dab neeg.

Kuv xav qhia rau koj paub me me txog qhov yuav ua li cas rau qhov kev ruaj ntseg ntawm koj tus kheej, tsis muaj kev txhawb nqa rau ntau hom kev pab hauv computer.

Nws yog dab tsi?

Ua ntej koj tham txog qhov chaw, koj yuav tsum siv sijhawm me me digression rau hauv qhov tob ntawm lub ntsiab lus. Lub khoos phis tawj yog ib qho kev qhia tshwj xeeb uas cuam tshuam cov tub sab hauv koj lub computer ntawm qhov tob hauv Internet, thiab tseem ua rau cov kev ua ntawm cov neeg soj xyuas uas tuaj yeem hloov koj cov ntaub ntawv rau ib tog neeg.

Thaum twg nws yeej xav tau?

Contrary to nrov ntseeg, tus neeg koj lub computer siab phem hackers yog tsis zoo li mus tua. Ntawm cov hoob kawm, yog tias koj yog ib co coj mus muag thawj coj ntawm lub tsev txhab nyiaj, ces nws yeej yuav los ua ib tug kev muaj tiag, tag nrho cov so tsis tau ntshai tshwj xeeb tshaj yog.

Tab sis yog tias koj muaj "IP" dawb (tsis yog dynamic), koj tuaj yeem nqa cov neeg tuaj yeem xaib ftp nyob hauv tsev los yog txiav txim siab tias yuav ua li cas ntawm ib tus neeg mazahism tuaj tos ib qhov chaw hauv koj lub computer hauv tsev ... Qhov kev ruaj ntseg no muaj tseeb!

Yuav ua li cas rau configure firewall kom raug, thiaj li hais tias nws muaj peev xwm daws tau zoo npaum li zoo tau nrog txhua yam dej num muab rau nws? Tam sim no ua kom tau reservation uas peb yuav tham txog cov chaw dav dav, vim cov khoom siv ntawm no zoo nyob rau hauv lub lag luam niaj hnub muaj ntau.

Customizing Packages

Ua ntej, peb yuav kho cov cai uas siv rau cov khoom xa tuaj. Qhov no tseem ceeb dua, vim nrog kev ruaj ntseg ntawm qhov kev ruaj ntseg (firewall) yuav muaj peev xwm tiv thaiv nws tus kheej (raws li cov cai tau sau los ntawm tus tsim tawm).

Peb txwv tsis pub tag nrho cov "teb" tuaj rau (TCP) mus rau qhov chaw nres nkoj hauv 1-1025, thiab UDP rau ntau qhov 1-1024. Nws yog dab tsi? Tus tshaj plaws yog hais tias nws yog muaj feem ntau ntawm tag nrho cov "qhov" nyob rau hauv kev tiv thaiv ntawm OS ntawm lub Windows tsev neeg. Feem ntau, lawv daim ntawv yuav zoo mus nrhiav kom paub ua ntej koj txheeb xyuas qhov kev ruaj ntseg.

Nco ntsoov kaw lub qhov rooj ntawm TCP 5000, thiab rau UDP 1900. Vim tias tag nrho cov saum toj no, feem ntau ntawm cov chaw nres nkoj muaj kev tiv thaiv ncaj ncees, theem uas ua tau raws li tag nrho cov kev cai ntawm tus neeg siv nruab nrab.

Tab sis yuav ua li cas rau configure lub firewall, Qhov rai 7 uas muab txawm nyob rau hauv lub pob yooj yim? Yog tias koj ua txhua yam kev piav qhia saum toj no, koj tuaj yeem xav txog koj tus kheej kom muaj kev tiv thaiv.

Kuv tuaj yeem qhib tau?

Qhib nws tau DNS (thiab rau lub tuam txhab UDP 53), FTP (TCP 20-21). Yog hais tias muaj kev xav tau (tus kheej http-neeg rau zaub mov), koj tuaj yeem qhib TCP 80. Yuav luag tag nrho cov ICMP tej pob khoom yuav ua tau yam xyuam xim. Ua kom yuam kev me ntsis: yog tias koj txwv tsis pub hu rau 80 chaw nres nkoj ntawm tej thaj chaw deb computers ntawm ICQ, ces cov nyiaj ntawm advertising yuav raug txo kom tsawg.

Txij li nws yog yooj yim heev rau configure firewall nyob rau hauv txoj kev tau piav saum toj no, nws yuav hais tias txawm novice thiab tag nrho cov pib hauv inexperienced yuav tiv thaiv nrog qhov no. Nco ntsoov hais tias tus firewall yuav tsis tau pab kom txawm peem rau cov tortuosity ntawm tus neeg siv lub ob txhais tes, tab sis vim hais tias ib zaug dua tsis mus saib questionable qhov chaw los yog qhib cov kev mus uas coj Vajtswv paub qhov twg!

Thiab yuav ua li cas qhib lub firewall kom tiav? Raws li txoj cai, nyob rau hauv cov chaw ntawm tej daim ntawv thov no muaj ib yam "tso cai rau tag nrho" lossis ib yam li ntawd. Siv qhov no tsis tshua muaj sijhawm.